GUID Generator
Generate random GUIDs / UUIDs in bulk.
Version 4 (random) GUIDs / UUIDs, generated locally with your browser's crypto engine.
Free online GUID generator. Instantly create one or many random version 4 GUIDs (UUIDs) with optional uppercase and brace formatting. Generated locally with your browser's crypto engine — copy one or all.
How to use the GUID Generator
- 01Choose how many GUIDs you need (1–500).
- 02Toggle uppercase or brace-wrapped formatting if you want it.
- 03Click Generate, then copy a single value or copy all at once.
Frequently asked questions
What is a GUID and how does it relate to a UUID?
GUID (Globally Unique Identifier) is Microsoft's name for what the rest of the industry calls a UUID. They are the same 128-bit value; this tool produces version 4 (random) identifiers.
Are the GUIDs generated on a server?
No. They are created in your browser using crypto.randomUUID(), so nothing is transmitted or stored.